Mathematics Exam Past Questions and Answers | JAMB, WAEC and NECO

Mathematics looks at measurement, relationships, and properties of numbers and groups using numbers and symbols. Important topics in math include arithmetic, algebra, geometry, and calculus.

• Question 821:

  A rectangular plot of land has sides with lengths of 38 m and 52 m corrected to the nearest m. Find the range of the possible values of the area of the rectangle

  Options:
  A) 1931.25 m${}^2$ ≤ A < 2021.25 m${}^2$
  B) 1950 m${}^2$ ≤ A < 2002 m${}^2$
  C) 1957 m${}^2$ ≤ A < 1995 m${}^2$
  D) 1931.25 m${}^2$ ≥ A > 2021.25 m${}^2$
  Show Answer
  The correct answer is A .
• Question 822: If n is the median and m is the mode of the following set of numbers, 2.4, 2.1, 1.6, 2.6, 2.6, 3.7, 2.1, 2.6, then (n, m) is Options:
  A) (2.6, 2.6)
  B) (2.5, 2.6)
  C) (2.6, 2.5)
  D) (2.5, 2.1)
  Show Answer
  The correct answer is B .
• Question 823: $\frac{0.0001432}{1940000}$ = k x 10ⁿ where 1 $\le$ k < 10 and n is a whole number. The values K and n are Options:
  A) 7.381 qnd -11
  B) 2.34 and 10
  C) 3.871 and 2
  D) 7.831 and -11
  Show Answer
  The correct answer is A .
• Question 824:

  

  TP and TQ are tangents to a circle centre 0 and r is a point on the circumference of the circle as shown in the figure. If angle PTQ = 45${}^{\circ }$, what is the magnitude of the angle PRO?

  Options:
  A) 45
  B) 135
  C) 40
  D) 76$\frac{1}{2}$
  E) 52$\frac{1}{2}$
  Show Answer
  The correct answer is D .
• Question 825: If a u² - 3v² and b = 2uv + v² evaluate (2a - b)(a - b²), when u = 1 and v = -1 Options:
  A) 9
  B) 15
  C) 27
  D) 33
  Show Answer
  The correct answer is A .
• Question 826: Which of the following is a factor of rs + tr - pt - ps? Options:
  A) (p - s)
  B) (s - p)
  C) r - p)
  D) r + p)
  Show Answer
  The correct answer is C .
• Question 827: Find the value of ${\int }_0^{\pi }\frac{co{s}^2\theta -1}{si{n}^2\theta }d\theta$ Options:
  A) π
  B) π/2
  C) -π/2
  D) -π
  Show Answer
  The correct answer is D .
• Question 828: If an investor invest ₦450,000 in a certain organization in order to yield X as a return of ₦25,000. Find the return on an investment of ₦700,000 by Y in the same organization. Options:
  A) ₦14,950.50K
  B) ₦25,150.30K
  C) ₦15,000.00K
  D) ₦38,888.90K
  Show Answer
  The correct answer is D .
• Question 829: The cost of dinner for a group of students is partly constant and partly varies directly as the number of students. If the cost is ₦74.00 when the number of is 20 and ₦96.00 when the number is 30, find the cost when there are 15 students Options:
  A) ₦68.50
  B) ₦63.00
  C) ₦60.00
  D) ₦52.00
  Show Answer
  The correct answer is B .
• Question 830:

  Inpreparing rice cutlets, a cook used 75g of rice, 40g of margarine, 105g of meat and 20g of bread crumbs. Find the angle of the sector which represent meat in a pie chart?

  Options:
  A) 30${}^o$
  B) 60${}^o$
  C) 112.5${}^o$
  D) 157.5${}^o$
  Show Answer
  The correct answer is D .